Zobrazeno 31 - 40
of 44
pro vyhledávání: '"Narine Vardanyan"'
Publikováno v:
Mankavarzhut'yan ev hogebanut'yan himnakhndirner, Vol 13, Iss 1 (2017)
The article discusses assessment as a significant component of educational process. The assessment mechanisms and peculiarities are listed in the framework of the recent reformations in educational sphere. In this context assessment is investigated a
Autor:
Arevik Vardanyan, Narine Vardanyan
Publikováno v:
Universal Journal of Microbiology Research. 2:27-31
Sulphur-oxidizing bacteria strain SO-1 and strain SO-2 have been isolated respectively from leaching pulp of zinc and copper concentrates. The cells of isolated bacteria are rods with the size of 0.3-0.5 x 0.7-2.0 mkm. They are capable of oxidizing e
Publikováno v:
Advanced Materials Research. 825:388-391
The bioleaching of sulfide minerals by iron oxidizing bacteria are implemented by direct and indirect mechanisms. The direct dissolution of minerals is caused by the attack of sulfide ions by enzymatic system of bacteria. In the indirect mechanism th
Publikováno v:
Universal Journal of Microbiology Research. 1:22-25
Leptospirillum sp. str. ZC isolated from bioleaching pulp of zinc concentrate is capable of oxidizing Fe (II) with the optimal temperature of 37℃. In pure culture bacteria is unable to oxidize pyrite, however, its growth together with sulfur oxi
Autor:
Narine Vardanyan, Arevik Vardanyan
Publikováno v:
Applied Biochemistry and Microbiology. 47:515-519
Ability for selective extraction of copper and zinc from zinc concentrate using association of chemolithotrophic bacteria was investigated. In the presence of bacterial association, the rate of leaching of zinc, copper, and iron was increased 3-fold,
Autor:
S. Z. Nagdalyan, Narine Vardanyan
Publikováno v:
Applied Biochemistry and Microbiology. 45:401-405
The main characteristics of a periodic bioleaching of the refractory gold-bearing pyrite ore from the Tandzut deposit (Armenia) with the help of moderate thermophilic bacterium Sulfobacillus thermosulfidooxidans subsp. asporogenes and original thermo
Autor:
Samvel Stepanyan, Levon Markosyan, Ruiyong Zhang, Narine Vardanyan, Mario Vera, Arevik Vardanyan, Wolfgang Sand
The exceptional diversity of ecogeographical conditions of Armenia and the richness of non-ferrous metals represent a great and valuable potential for the investigation of the biodiversity of acidophilic chemolithotrophic bacteria as well as for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e11bcbc73a8d2d7aef3f583e8405299e
Autor:
V. P. Akopyan, Narine Vardanyan
Publikováno v:
Microbiology. 72:438-442
Two strains of Leptospirillum-like bacteria isolated from dumps of Alaverdi and Akhtala sulfide ore deposits in Armenia were studied. The optimum and maximum temperatures for the growth of both strains were 37 and 40°C, respectively. The pH optimum
Publikováno v:
Otolaryngology–Head and Neck Surgery. 147
Publikováno v:
Scopus-Elsevier
Chemical oxidation of pyrite and chalcopyrite by ferric sulfate (Fe2(SO4)3) solution and biogenic ferric iron obtained by mixed culture of isolated thermotolerant Acidithiobacillus sp. 13Zn and Leptospirilum ferriphilum CC immobilized on natural carr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ddca5e2d05d154fcd25448794249e81
http://www.scopus.com/inward/record.url?eid=2-s2.0-85047167373&partnerID=MN8TOARS
http://www.scopus.com/inward/record.url?eid=2-s2.0-85047167373&partnerID=MN8TOARS